Show tabs like a tree.
Automatically refresh tabs based on custom time intervals
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
Take tabs from parent windows and arrange them in layouts of tiled sub-windows, using the toolbar button, context menu or keyboard shortcuts. Makes it easy to browse, compare or monitor multiple pages. Synchronize scroll. Save and re-open layouts.
Squared tabs, application menu, add-on bar, small button view and many more 'old' features for 'Firefox 29-56', not for Firefox 57+! Release builds Beta builds
Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch to a specific one.
Short, Vim-style keyboard shortcuts for browsing and navigation, for a near mouseless experience.
Simply adds "Duplicate Tab" to tab context menu.
Simulate the use of a series of proxy changing at each new connection.
Use native tab discard method to automatically reduce memory usage of inactive tabs
Snooze Tabs help you focus your attention online, whether you want to remove distractions for now or save something for later. Hit the snooze icon to dismiss tabs you don’t want now, and set an alarm to bring them back when you need them.
Experience a beautiful image from Google Earth every time you open a new tab.